"sqrt" is shorthand for "square root"
The rule to use is
sqrt(x*y) = sqrt(x)*sqrt(y)
Factor 40 into 4*10, then use the rule above to get the following
sqrt(40) = sqrt(4*10)
sqrt(40) = sqrt(4)*sqrt(10)
sqrt(40) = 2*sqrt(10)
9/4 / 5/8
Flip the 2nd fraction and multiply:
9/4 * 8/5
Multiply the numerators and denominators together:
72/20
Convert to mixed number:
3 3/5
I = Prnwhere I is the interest, P is the principal, r is the decimal equivalent of the given rate, and n is the number of years. In this item, we assume that n is equal to 1. Solving for the interests, $200: I = ($200)(0.03)(1) = $6 $150: I = ($150)(0.03)(1) = $4.5The difference between the two calculated interests is $1.5.
Therefore, you could have earned $1.5 more if you invested $200 rather than $150.
hope this helps (^>^)
Move the -4 to the right (+4 on both sides). now you have 4y=20. divide both sides by 4. y=5
