Is x+y=7 and x-y=9 parallel, perpendicular, or neither

Sarah had 4 pieces of rope each piece was twice the length of the previous piece the first piece was 1 foot 3 inches long how many feet of rope did Sarah have altogether

A computer software store is having a sale. The table shows the regular price r and the sale price s of various items. Which formula can be used to calculate the sale price?

Cassie wants to use green and yellow fabric to make some curtains. She has 28.85 yards of yellow fabric and 34.25 yards of green fabric. How many total yards of fabric does Cassie have? A) 52.00 B) 53.10 C) 63.00 D) 63.10

What is the value of 54-4a^2+3b^3 when a=-2 and b=4

Which number is the inequality m>7/12

Jose worked n hours at $8.75 per hour. He made a total of $61.25. Write an expression that represents the total number of hours Jose worked

Which of the following is the correct translation for the expression x - 6? a number subtracted from 6 a negative number added to 6 the product of a number and - 6 the difference between a number and 6

F (x) = 4x2 - 24x + 20?

My question: Tia's car needs repairs. Honest Harry will charge $70 per hour plus $130 for the part. Lucky Lou will charge $80 per hour plus $40 for the part. How long is the job if the two costs are the same?

Sarah used 2.5 cups of cheese in a dish that serves 10 people. Amyn used 1.6 cups of cheese in a dish that serves 8 people. How much more cheese is in one serving of Sarah's dish?