Answer:
a.) 
b.) 
c.) $
Step-by-step explanation:
a.) If she earns $7 'per' hour, this multiplication. After a week, we need to see how many hours she worked to earn $91, so this goes behind the equal sign. Let <em>h</em> be the unknown number of hours:

Solve for h. Divide both sides by 7:

Sylvia worked 13 hours at a rate of $7 an hour.
b.) She can work at most 15 hours a week. At 'most' can also mean less than or equal to. Let <em>h</em> be hours:

Sylvia can work less than or equal to 15 hours per week.
c.) If Sylvia can work 15 hours, plug in this value for <em>h</em> into an equation when she earns $7 per hour. Let the product of the hours and money equal <em>t</em> for total:

The most money Sylvia can earn in a week is $105.
<em>Finito.</em>
Answer:
A
Step-by-step explanation:
Here is a site to help you...that my teacher showed me...when you search it it will show this...just click graphing calculator
desmos.com
Answer:-2x^2(2-1)
Step-by-step explanation:
-4x^2 + 2x^2=-2x^2(2 - 1)
For the first equation it should be 1 and 4 because 7(1)+6(4) would simplify to 7+24 which equals 31.
Then for the second equation, well... there’s multiple answers:
First would be 3 and -2 because 3(3)-10(-2) simplifies to 9+20=29.
Another one would be 23 and 4 because 3(23)-10(4) simplifies to 69-40=29.
Hopefully this helps :D
Answer:
Jiri is 38 years old.
Step-by-step explanation:
First, 67 - 29 = 38 and 29 + 9 = 38.
Hope this helps!