Write a problem for the equation 3+x=8. Then solve the equation

Irene has 3 cupcakes right now. If she wants 8 cupcakes in total, how many more does she need to buy?

x = 5

Step-by-step explanation:

The problem breaks down to 3+x=8 because:

Solve the equation:

We want to keep 'x' on the left side, moving everything to the right side (this is called isolating 'x'). Do the reverse operation to the entire equation for numbers you want to move.

3 + x = 8             Move the '3' to the right. The opposite of positive 3 is - 3

3 - 3 + x = 8 - 3     Subtract 3 from both sides.  3-3=0, it cancels out

x = 8 - 3       'x' is isolated. Solve right side

x = 5         Final answer

Therefore Irene will buy 5 cupcakes to get 8 in total.

50

step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.