1. A student named Joe is deciding between the three plans. He usually talks on the phone for 600 minutes, sends 1,000 messages, and uses 1 gigabytes of data per month. Which plan would be the
cheapest option for him? Justify your answer mathematically,

b

step-by-step explanation:

the correct answer is x/3+10≥32

hope this !

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.