Help help its my hw the QOHS workout team completes a total of j jumping jacks in class today. Before Ms. Saulsbury arrived, the class had already completed 250 jumping jacks. Ms. Saulsbury completed b more jumping jacks to help the class reach the total. write an equation to represent the total number of junping jacks Ms. Saulsbury and the class completed in class.​

there would be 365 different 4 digit numbers

step-by-step explanation:

i belive that it is 365 because i asked google

a. she will receive a refund of $278.

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.