use a system of equations to solve the word problem. a rectangular table has a perimeter of 18 feet. its length is 5 feet greater than its width. find the dimensions.
a. l = 8 and w = 3
b. l = 7 and w = 2
c. l = 2 and w = 7
d. l = 3 and w = 8

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000

What is the value of x in the following equation? -3x-2=2x+8

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?