Answer:
x ≥ 92
Step-by-step explanation:
let 'x' = necessary score
(74 + 90 + 84 + x) / 4 ≥ 85
(248 + x) / 4 ≥ 85
cross-multiply:
248 + x ≥ 340
x ≥ 92
Step-by-step explanation:
Question 5
y = - 3x
Question 6
Answer:
your answer would be 8
Step-by-step explanation:
you would need to add the six to the two and divide y by 8
Let the required equation be y = mx + c; where y = 1, m = f'(0), x = 0
f(a) = sec(a)
f'(a) = sec(a)tan(a)
f'(0) = sec(0)tan(0) = 0
y = mx + c
1 = 0(0) + c
c = 1
Therefore, required equation is
y = 1.
