Step-by-step explanation:
Table A represents an arithmetic sequence with a common difference d=+7.5
so for x=4, it's y³+7.5=25+7.5=32.5
for x=5, it's y⁴+7.5=32.5+7.5=40
Table B represents a geometric sequence with a common ratio r=4, so you're essentially multiplying by 4.
for x=4, y⁴=y³×4=160×4=640
for x=5, y⁵=y⁴×4=640×4=2560
Well lets set up an equation 2 problems per second yields

for every second, x.
Now if we want the problems solved, y it will be equal to this product so

Now lets plug in 60 seconds, which is 1 minute

It can solve 120 algebra problems in 1 minute.
Answer:
numerator - 4
denominator - 3
Step-by-step explanation:
6 × 2/9
12/9
4/3