Can somebody please answer these two math problems!

1. A football team gained 4 yards in one play. In the next play, the team lost 4 yards. What is
the team's net yard gain?

2. Between 8 a. m. and 3 p. m. on a summer day, the outdoor temperature increased by 23º.
Between 3 p. m. and 10 p. m., the temperature decreased by 23°. What was the net change in
temperature from 8 a. m. to 10 p. m.?

0.6, 3/5, and 6% are the 3 same portion.

but, when they're all changed to a decimal they would equal to 0.6.

hope this , good luck!

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet

i think the answer is a.( -3, -1 )