Use substitution to solve the system of equations.

y = 4.5x + 7.5

y = - 3.5x - 4.5

A. x = - 1.5, y = - 0.75

B. x = 1.5, y = 0.75

C. x = 1.5, y = - 0.75

D. x = - 1.5, y = 0.75

If f (x) = 2x 2 + 3, find f (3). 31 15 21 39

Select all choices which could lead to a biased result. 1. Randomly calling telephone numbers to ask if people are satisfied with their service 2.

Paige has a $213.84 deducted from her paycheck for her 401K. her gross paycheck is $1944. what percent of her gross paycheck amount does she had the doctor for her 401k. -9% -11% -13%

Sean chewed 2/5 of his rawhide bones. If he had 10 bones to begin with, how many did he chew up?

Let the polynomials A = 7x² + 3xy and B = - 3xy. Determine A + B. a) 7x² b) 3xy c) 7x² + 6xy d) 14x² + 6xy e) - 3xy

Find the mean of the dаta: 14, 9, 2, 13, 16, 3, 13, 10

Simplify the expression: 8 + (7+x)

a hiker climbs down a 90 foot hill in five minutes what is his average change in elevation per minute

What is the remandier to 92931 divided by 13?

Mr. Rahman gave 40% of the money he had to his wife. he also gave 20% of the remaining amount to each of his 3 sons. half of the amount now left was spent on miscellaneous items and the remaining amount of Rs. 12000 was deposited in the bank.