do you know how? 4. find the missing value in each row. use the percent equation. principal (p) interest…

Explanation:

Step1: Recall simple - interest formula

The simple - interest formula is $I = Prt$, where $I$ is the interest earned, $P$ is the principal, $r$ is the interest rate (in decimal form), and $t$ is the time in years.

Step2: Solve for $t$ in the second row

Given $P = 500$, $r=0.04$ (since $4%=0.04$), and $I = 20$. Substitute into the formula $I = Prt$: $20=500\times0.04\times t$ $20 = 20t$ $t=\frac{20}{20}=1$

Step3: Solve for $P$ in the third row

Given $r = 0.1$ (since $10%=0.1$), $t = 7$, and $I = 35$. Substitute into the formula $I = Prt$: $35=P\times0.1\times7$ $35 = 0.7P$ $P=\frac{35}{0.7}=50$

Step4: Solve for $r$ in the fourth row

Given $P = 200$, $t = 2$, and $I = 6$. Substitute into the formula $I = Prt$: $6=200\times r\times2$ $6 = 400r$ $r=\frac{6}{400}=0.015$ or $1.5%$

Answer:

Principal ($P$)	Interest Rate ($r$)	Time in years ($t$)	Interest Earned ($I$)
$$100$	$5%$	$3$	$$15$
$$500$	$4%$	$1$	$$20$
$$50$	$10%$	$7$	$$35$
$$200$	$1.5%$	$2$	$$6$