Janet earns $300 per week plus a commission of 10% on all sales that she makes. Write a formula for E, Janet’s weekly earnings, in terms of s, her sales for the week. Then solve your formula for s. _____________________________________________________________________

E = 300+30s

300 because of original $300 sum

and 30s because 10% of 300 is 30

and s because each sale is multiplied by 30

so the equation is E = 300+30s

Answer Link

FelisFelis FelisFelis · Answer 2 · 2019-09-24T02:26:28-04:00

Answer:

The formula for E is $E=\frac{s}{10}+300$.

The required formula for s is $s=10E-3000$.

Step-by-step explanation:

Consider the provided information.

Janet earns $300 per week plus a commission of 10% on all sales that she makes.

Let Janet sales is represents by s and weekly earning represents by E.

The fixed amount which he earn per week is $300 and Janet earns commission of 10% on all sale.

This can be written as

$E=10\% \times s+300$

$E=\frac{10}{100}\times s+300$

$E=\frac{s}{10}+300$

Hence, the formula for E is $E=\frac{s}{10}+300$

Now solve the formula for s as shown below:

Subtract 300 from both sides

$E-300=\frac{s}{10}$

Multiply both sides by 10.

$10(E-300)=10\times \frac{s}{10}$

$s=10E-3000$

Hence, the required formula for s is $s=10E-3000$.