exam Maths Puzzle Numerical Ability

evaluate each expression using the values p=3.5; n=2; s=1.4.

#44. s/pn-ps/n=
#45. pn/s+s/n=

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x^2=-5x-5 Solve for the following system of linear inequalities by graphing. x+2y<3 and 2x-3y<6