What is the value of z in the equation 2z + 7 = -5?
a. -6
b. -1
c. 1
d. 6

Which of the following is correct interpretation of the expression -4+13

Emily is entering a bicycle race for charity. her mother pledges $0.90 for every 0.75 mile she bikes. if emily bikes 18 miles, how much will her mother donate?

The expression 1.01*1.005(^t) gives the amount of money, in thousands of dollars, in carter's savings account (t) years after he opens it. what does 1.01 represent in this expression?