Question

from unit 5, lesson 14
in football, the team that has the ball has four chances to gain at least 10 yards. if they dont gain at least 10 yards, the other team gets the ball. positive numbers represent a gain of yards, and negative numbers represent a loss of yards. the bulldogs just got the ball. select all the sequences of four plays that result in the bulldogs getting to keep the ball.
a) 8, -3, 4, 21
b) 30, -7, -8, -12
c) 2, 16, -5, -3
d) 5, -2, 20, -1
e) 20, -3, -13, 2

Explanation:

Step1: Calculate sum of sequence A

$8 + (-3) + 4 + 21 = 30$

Step2: Calculate sum of sequence B

$30 + (-7) + (-8) + (-12) = 3$

Step3: Calculate sum of sequence C

$2 + 16 + (-5) + (-3) = 10$

Step4: Calculate sum of sequence D

$5 + (-2) + 20 + (-1) = 22$

Step5: Calculate sum of sequence E

$20 + (-3) + (-13) + 2 = 6$

Step6: Identify sums ≥10

Sums ≥10: 30, 10, 22

Answer:

A. 8, -3, 4, 21
C. 2, 16, -5, -3
D. 5, -2, 20, -1