89 squared minus 39 squared and the answer you get is what you put into the radical
Answer:
-2 - 5 = -7
Step-by-step explanation:
Answer:
i) k = 36.8
ii)y = 36.8/square root of x
iii)y = 1.4
Step-by-step explanation:
If y is inversely proportional to square root of x;
then the two variables are related by,
y = k/ square root of x
i)Value of k when...x = 8 and y = 13,
substitute into the equation above..so as to find the value of k
13 = k/square root of 8
;k = 13 × square root of 8
;k = 36.8
ii)Then substitute the value of k with...36.8
y = 36.8/square root of x
iii)If x = 27...then y =;
y = 36.8/27
y = 1.4
Only true statement for function f(x) =
is <u>c. if the value of x increases by 1, the value of y will triple</u>.
<u>Step-by-step explanation:</u>
<u>a. the function decreases
</u>
f(x) =
, For value of x<1 function decreases and for x>1 function increases . False statement .
<u>c. if the value of x increases by 1, the value of y will triple.
</u>
For value of x increases by 1 we have ,
. True statement.
<u>b. the function has a y-intercept of (0, 3)
</u>
At y intercept x=0, f(x) =
,
. Function has a y-intercept of (0,3). False statement.
<u>d. the function contains the point (1, 4)</u>
At x=1,
. Function contains (1,12) not (1,4) . False statement.
Solution:
1. Account balance of customer= $ 1,000
Interest earned in checking account= 0.75%
Financial charge= $ 2
So, income earned in one month on the checking account
= 0.75% of 1,000 - $ 2

Option (B) $ 5.50
2. Checking account earnings at Baker’s Bank (I) = -0.09 x + 10.2
The earnings at Elite Bank are modeled by: I = -0.02 x + 7.5
The number of checks when Elite Bank start generating more checking account income than Baker's Bank is given by inequality,
→→ -0.02 x +7.5 > -0.09 x +10.2
→→ -0.02 x + 0.09 x > 10.2 - 7.5
→→0.07 x > 2.7
→→
So, the number of checks should be a whole number.
So, when number of checks = 39,→→Option (C) Elite Bank will start generating more checking account income than Baker's Bank.
3. Total amount in Emilio's checking account at the end of the week=( Beginning Balance= $ 728.32) -[4 Checks=( 99.48 +33.50 +18.23 +72.05)]+ $ 1109.90(Paycheck amount)
= 1109.90 + 728.32 - 223.26
= $1614.96 →→ Option (D)