Answer:
-74
Step-by-step explanation:
f(x) = -2x^2 +8x -10
Let x = -4
f(-4) = -2 ( -4)^2 +8(-4) -10
= -2(16) -32-10
= -32 -32-10
= -74
Point Slope:
£0.40
Divide £40 by £3.30 to find the number she can buy
£40 ÷ £3.30 = 12.1212..
That is she can buy 12 light bulbs
cost = 12 × £3.30 = £39.60
change = £40 - £39.60 = £0.40
1st: 0.04, 0.04, 0.25, 0.4
2nd: 0.06, 0.16, 0.6, 60
3rd: 0.07, 0.7, 0.075, 0.75, 7.5
4th: 0.02, 0.18, 0.2, 200
5th: 0.009, 0.09, 0.9, 0.95
6th, 0.1, 0.12, 1, 10
