Packs of batteries cost £2.85 each. Ben has £45 to spend on batteries. Ben buys as many packs as he can. Work out how much chang
1 answer:
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Answer:
B
Step-by-step explanation:
since y and x vary directly the equation relating them is
y = kx ← k is the constant of variation
to find k use any ordered pair from the list given
using x = 4 when y = - 2, then
k = =
= - 0.5 → B