Monica deposit 300 into a savings account that pays a simple interest rate of 4.3% call deposit 400 and into the savings account that pays simple interest rate of 4.2% Monica says she warren more interest in one year because her interest rate is higher is she correct

No

Step-by-step explanation:

MONICA:

Principal, p = 300

Simple interest, r = 4.3% = 0.043

CALL:

Principal, p = 400

Simple interest, r = 4.2% = 0.042

Amount, A received by each after one year :

Recall:

A = p(1 + rt) ; time, t = 1 year

MONICA:

A = 300(1 + 0.043(1))

A = 312.9

CALL = 400(1 + 0.042(1))

A = 416.8

Monica is incorrect, this is because amount earned is not only dependent on the interest rate but also the number of period and the initial or principal amount deposited.

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this

i believe a. 12x≥120 is the answer