Which of the following statements is always true for all values of a

A) - a = a

B) |a| = - a

C) |a| = a

D) - (-a) = a

Alex purchased a hour calling card. he has used t minutes of access time. write an algebraic expression to represent how many minutes he has remaining and identify the units for the expression

A rectangular prism has dimension of 8 cm by 9 cm. what is the volume?

Jorge baked cookies for his math class's end-of-year party. There are 28 people in his math class including himself and his teacher. He baked enough cookies for every one to get 3 cookies each. How many cookies did Jorge bake?

Which choices are equivalent to tbe fraction below? 12/32 check all that apply. a. 2/6 b. 10/30 c. 4/9 d. 6/16 e. 3/6 f. 4/10

1. The distance you travel varies directly with the amount of gas you use. You can travel 300 miles on 12 gallons of gas. Write a direct variation equation in the form y = kx 2. How many gallons of gas will it take to travel 750 miles? 3.

At Davidson's Bike Rentals m, it cost $17 to rent a bike for 4 hours. How many hours of bike use does a customer get per dollar?

What is k in terms of n?

Each time you roll a die how many equally likely outcomes are there?

Use prime factorization to find the GCF of 60 and 88

What is the vertex of this quadratic function? h (x) = - 5 (x + 7) 2 + 11 A. (7,11) B. (7,-11) C. (-7,-11) D. (-7,11)