Sarah is saving to buy a new phone. She needs $150, and she has already saved $63. Write an equation to model this situation. Let x represent the amount of money Sarah needs. How much money does Sarah need?

87 dollars

Step-by-step explanation:

just subtract 63 from 150 to get the amount that she needs to save up to 150 to get 87

1. is 4 and 2. is 3

step-by-step explanation:

so if you look at the first one you see that 1 is to 4 and 2 is to 8 and so on, so you can see for every 1 there is a times 4 so if it were 3 then it would be 3*4 and it is 12

for number 2 it is 3 because 1 is to 3 and 2 is to 6 so for every 1 there is 3 so if it were 3 then there would be 3*3 = 9

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1