1.
Answer is B.
2.
y = -4x - 7
x-intercept where y = 0,
0 = -4x - 7
-4x = 7
x = -7/4
y-intercept where x = 0,
y = -4(0) - 7
y = -7
Answer is C.
3.
Answer is none of the above.
Your question probably has typo errors? Try asking the third question again :)
2×10^(-7)=0.0000002m
You have 6 zeros in front of 2.
Tan(angle) = opposite/adjacent
tan(x) = 90/51
x = arctan(90/51)
x = 60.461217740442
which rounds to 60 when rounding to the nearest whole number
Answer: 60