= 5
step-by-step explanation:
to find the 15th term substitute n = 15 into the nth term formula
= (- 3 × 15 ) + 50 = - 45 + 50 = 5
c
y= 2x+7
changed to y= 5x +7
as slope is increased from 2 to 5
therefore it would be less steeper
so, option d) is correct
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