book Maths Puzzle Numerical Ability

Subtract.

2/5w + 10 minus 3/2w - 4

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book Other Question

Can you graph these functions:

(1) V = 4x^3 - 28x^2 + 48x
(2) h = 7.96cm

Can you graph these coordinates:
(0, 1), (1, 1.1), (2, 1.21), (3, 1.331), (4, 1.4641)

Thank y I need to know the equation for the following:

Kathryn drove her rig 5 hours before dawn and 6 hours after dawn. If her average speed was 5 miles per hour more in the dark and s