Find z such that 97.5% of the standard normal curve lies to the left of z

David charges $15 plus $5.50 per hour to mow lawns Arie charges $12 plus $6.25 per hour to mow lawns. In what situation is Aries charge greater than or equal to David's charge?

Transform the equation x-3y=-15 to express it in slope-intercept form

Square root of G multiplied by square root of G

If x is a real number such that x^3 = 64 then x^2 + x=?

How many solutions can be found for the set of linear equations? 7 (x + 2) and 7x + 14 a. no solution b. one solution c. two solutions d. infinite many solutions?

What is the answer to - 4|8n|=-32

7 less than the product of 4 and the number

The positive square root of 72 lies between what pairs of integers? a. 5 and 6 b. 6 and 7 c. 7 and 8 d. 8 and 9 e. 9 and 10

Which inequality has no solution? 6 (x+2) > x-3 3+4x<2 (1+2x) -2 (x+6) < x-20 x-9 < 3 (x-3)

What is a number not divisible by 2 whose digit is 1,4,5,7