exam Maths Puzzle Numerical Ability

what is the y-intercept of the paralola y=x^2+10x+30

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exam Other Question

Which of the following values of Spearman's (rho) indicates the strongest relationship between two variables?
A) -0.91
B) -0.05
C) +0.64
D) +0.89
E) 0 A saleswoman at a car dealership earns $1200 per month plus a 9% commission on her total sales. If she earned $7320 last month, what was the amount of her sales?