SAT Math 2025 Algebra
MOST ASKED
QUESTIONS WITH
DETAILED ANSWERS
(3^a)^2 - Answer: is equal to 9^a
(a^3)^3 times (a)^(-9) - Answer: is equal to 1
Polynomial expression - Answer: one or more terms with a coefficient, a variable base, and an exponent.
Base of a polynomial - Answer: has an exponent attached to it.
Slope less than 1 - Answer: y is less than x
x^1 = x - Answer: 3^1 = 3
x^0 - Answer: = 1
x^m * x^n - Answer: = x^m + n
x^m/x^n - Answer: = x^m-n
(x^m)^n - Answer: = x^mn 1 / 2
(xy)m - Answer: = (x^m)(y^m)
x^(-m) - Answer: 1/x^m
If someone got a certain number of X questions correct, and a certain percentage of Y questions correct, to find the percentage of correct answers... - Answer: solve for all the numbers in the solution, and then find the percentage that comes from that.When asked for the increase and decrease of a percentage of something... - Answer: think of it like x(percentage change times percentage change)
For example:
p(1.2 * 0.6 * 1.25) x interest compounded annually means... - Answer: (Original deposit)(Percentage + 1)^(Time)
Semiannually - Answer: twice a year.
When calculating COMPOUNDED Semiannually (or quarterly) - Answer: If the yearly is given, divided that percent in half before adding one. Then multiply the t by how many times it is compounded per year (twice for semiannually.) For interest that is compounded more than once a year - Answer: a = p(1 + r/n)^tn n is the number of times it is compounded per year.
Simple interest - Answer: not compounded
For simple interest... - Answer: A = P(1 + rt)
r = interest rate.p = initial investment.
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