5. Twice the sum of a number and -38 amounts to 20. (Hint: needs parentheses) 1
I
6. Alex sold his used lawn tractor and accessories for $210. If he received twice as much money for the lawn
tractor as he did for the accessories, find how much money he received for the lawn tractor. Write an
equation. Then solve the equation.
7. The cost of a television with remote control is $649. This amount is $125 more than the cost without remote
control. Find the cost of the television without remote control. Write and equation. Then solve the
equation.

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

The avenues in a particular city run north to south and are numbered consecutively with 1st avenue at the western border of the city. the streets in the city run east to west and are numbered consecutively with 1st street at the southern border of the city. for a festival, the city is not allowing cars to park in a rectangular region bordered by 5th avenue to the west. 9th avenue to the east, 4th street to the south, and 6th street to the north. if x is the avenue number and yis the street number, which of the following systems describes the region in which cars are not allowed to park? 5th ave 9th ave