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joja [24]
2 years ago
6

help with either of these questions pleaseee at least one of them I’m so confused rn I’d really appreciate it and will brainlist

you dw

Mathematics
2 answers:
VladimirAG [237]2 years ago
8 0

Step-by-step explanation:

a) Fred → 35 years old

James → J years old

(3 × J) - 1 = 35

3J - 1 = 35

b) the number of people (n) Anita can invite depends on her age (A) and you add (+) 2.

therefore, n= A +2

2.a) n represents the no of phones he sells.

so if he charges $10 for a phone, then

n × 10 will represent the amount of money he makes for the no of phones he sells. you are given that P represents the amount of money he makes from selling a phone which is 10N and also his weekly salary, $ 250. this is the amount of money he receives for the whole week.

Hence, 10n + 250 = P

ans: P= 10n + 250

b) the next week he sells 20 phones. he charges $10 per phone. then he will make $200 from selling the phones. but he will also receive his weekly salary, which is $250. total money he receives equals $450.

a better way to reach the answer is using the above equation:

P = 10n + 250, where n= 20

P= (10*20) + 250

P= $450

hope you understand this now,

s.

olga_2 [115]2 years ago
7 0
1. a. 35 = 3J - 1
b. n = A + 2

2. a. P = 250 + 10n
b. P = 250 + 10(20) = $450
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