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salam4704
03.07.2019 •
Mathematics
Eliza earns $400 per week plus $15 for each new customer she signs up. let c represent the number of new customers eliza signs up. write an expression that shows how much she earns in a week. then find how much eliza earns in a week in which she signs up 18 customers.
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Ответ:
400+ (15c)
$670
Step-by-step explanation:
Eliza earns per week = $400
She earns for each new customer's signs up = $15
Let the number of new customers Eliza signs up = c
The expression that shows her earning in a week will be
400+ (15c)
If the number of customers that signs up = 18
The weekly earning of Eliza will be = 400+(15 × 18)
= 400 + 270
= $670
Eliza's earning in a week would be $670.
Ответ:
A
Step-by-step explanation:
Let x = speed of the faster car, y = speed of the slower car
after t = 5 hours, distance of slower car = 275 = 5 * y, so y = 275/5 = 55 mph
distance of faster car = 275 + 40 = 315 miles
then x = 315/5 = 63 mph
A