Help me with this please! Will mark brainliest!

1)2500

2) 1500

3)2.5%

Step-by-step explanation:

1) the standard formula for interest is i=prt where  i= interest, p= principal and t=time

In the first scenario, everything but the principal is given so lets substitute the info into the equation:

75=p*0.03*1

75= 0.03p

75/0.03=p

2500=p

Same thing for second scenario, just different numbers

120=0.04*2*p

120=0.08p

1500=p

This time everything but the rate is given:

250=10000*1*r

250=10000r

Divide both sides by 10000

0.025=r

2.5%=rate(convert into percentage)

Hope this helps!

490*x + 700*y > 4000

It is < as it can be equal to 4000 per week or less than.