Bethany can mow her family’s lawn in 4 hours. Her brother Colin can mow the lawn in 3 hours. Which equation can be used to find the number of hours, x, it would take for Bethany and Colin to mow the lawn together? Rate
(Lawns per Hour)
Time
(Hours)
Fraction Completed
Bethany
One-fourth
x
One-fourth xx
Colin
One-third
x
One-third xx

3 + 4 = x
One-fourth x minus one-third x = 1
One-fourth x + one-third x = 1
4 minus 3 = x

Tomas is making trail mix using granola and walnuts. he can spend a total of $12 on the ingredients. he buys 3 pounds of granola that costs $2.00 per pound. the walnuts cost $6 per pound. he uses the equation to represent the total cost, where x represents the number of pounds of granola and y represents the number of pounds of walnuts. he solves the equation for y, the number of pounds of walnuts he can buy. answer- b tomas added 6 to both sides of the equation instead of subtracting 6. just took the test

Awasher and a dryer cost $701 combined. the washer costs $51 more than the dryer. what is the cost of the dryer?

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14