Systems by substitution: A phone company offers two monthly plans. Plan A costs

$17

plus an additional

$0.17

for each minute of calls. Plan B costs

$28

plus an additional

$0.13

for each minute of calls.

Which expression represents the number 5i4+2i3+8i2+-4 rewritten in a+bi form?

A painter charges $32 per hour for labor plus $50 for supplies. If the total charge was $338 how many hours did he spend painting?

What is the value of the function f (x) = 2x2 + 3 when x = 2? 7 19 11 -1

An office building rents for $40,000 the first year, then increases by 0.5% each year. Use summation notation to represent the total payments for the first three years. Explain your reasoning. Marcus's response is given below: If rent increases by 0.

F (n) = 36; solve for n

Mattie uses the discriminant to determine the number of zeros the quadratic equation 0 = 3x2 - 7x + 4 has. Which best describes the discriminant and the number of zeros? The equation has one zero because the discriminant is 1.

Three times the sum of x and seven is greater than it equal to the sum of two x and six

the sum of the digits of a two-digit number is 9. when the digits are reversed, the new number is 9 more than the original number. find the original number. check your answer.

What property is 3 (x+2) = 2x-10

Solve for n. n + 1 = 4 (n - 8) n = 1 n = 8 n = 11 n = 16