X + y = 3

2x + 2y = 6

Substitution method

hint: solve for x first in the first equation by substituting it

4. A scuba diver was at a depth of - 80 1/2 How many feet did the scuba diver travel if the diver traveled to the surface of the ocean?

You are writing up plans for building a table from a 4-foot-by-8-foot rectangular sheet of plywood. The table top will be a square, and the top face must be sanded.

What is the eqivalent expression for 3p+12m+8

Simpify the expression 7y+3x+3-2y+6 What is the coefficient of y? What is the constant?

Which expressions represent rational numbers? Check all that apply. StartRoot 6 EndRoot + StartRoot 9 EndRoot StartRoot 64 EndRoot + StartFraction 6 Over 11 EndFraction StartRoot 36 EndRoot + StartRoot 21 EndRoot StartRoot 16 EndRoot + StartRoot 169

Gregorio took two tests. Find his z-score for each test. (Remember: The number of standard deviations between a score and the mean score is indicated by a z-score.

The variablesx and y are directly proportional, and y=2 when x=3. What is the value of y when x=9?

Barry got a samll sandwich for lunch and ate 1/2 of his sandwich. Jonah got a large sandwich and ate 1/2 of his sandwich. Did Jonah and Barry eat the same amount for lunch? Explain how you know.

Solve. s - 6 < 24 s < 6 s < 10 s s < 90

How many solutions are there for a+b+ab=50. Show your work