“If s(x) = 2-x^2 and t(x)=3x, Which value is equivalent to (s•t)(-7)?

How can (square root of 25) ^2 be rewritten?

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

Which of the following scenarios demonstrates an exponential decay