Digital SAT Practice Questions
Access 462 official-caliber practice questions. Filter by subject or difficulty to pinpoint your cognitive blind spots.
What is the discriminant of $x^2 + 6x + 9 = 0$, and what does it tell you about the roots?...
A population of bacteria satisfies $P(t) = 500(1.08)^t$, where $t$ is hours. By what percent does the population grow each hour?...
An investment value is modeled by $V(t) = 1200(0.85)^t$. What does the value 0.85 represent?...
If a radioactive isotope decays according to $M(t) = 80(0.5)^{t/14}$, what is the half-life of the isotope in days?...
A car's value depreciates by 12% each year. If its initial purchase price was $24,000, which expression represents its value after $t$ years?...
The function $N(d) = 250(2)^{d/3}$ models fruit fly population growth. How many days does it take for the population to double?...
In the equation $y = 350(1.045)^x$, what does 350 represent?...
A savings account starts with $1,500 and earns 3% annual interest compounded monthly. Which equation gives the balance $A(t)$ after $t$ years?...
A substance has mass $m(t) = 400(0.5)^{t/5}$. What is the mass of the substance when $t = 15$?...
The population of a town is $P(t) = 12,000(1.025)^t$. By what percentage does the population grow over a 10-year period?...
A computer processor speed doubles every 18 months. If its current speed is $S_0$, which function gives the speed after $m$ months?...
If $f(x) = 4(3)^x$, what is the value of $f(3) - f(2)$?...
For the exponential function $g(x) = a \cdot b^x$, $g(0) = 5$ and $g(1) = 15$. What is $g(3)$?...
A sample of iodine-131 decays according to $A(t) = 160e^{-0.0866t}$, where $t$ is in days. What was the initial mass?...
An invasive plant species covers an area modeled by $A(w) = 15(1.20)^w$ square meters after $w$ weeks. What is the weekly percent increase?...
If $2^{x+3} = 64$, what is the value of $x$?...
Simplify the expression $\sqrt{72x^4}$ for $x > 0$....
Which expression is equivalent to $x^{5/3}$ for all $x > 0$?...
Evaluate $(27)^{-2/3}$....
If $x^{3/4} = 8$, what is the value of $x$?...
Simplify $\frac{x^{7/2}}{x^{3/2}}$ for $x > 0$....
Which value is equivalent to $\sqrt[4]{16x^8}$ for $x > 0$?...
Express $\sqrt{x \sqrt{x}}$ in exponential form for $x > 0$....
If $\sqrt{3x + 1} = 5$, what is the value of $x$?...
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