2-37 Below are some new distances with given lengths to help Cecil cross the tightrope. Find at least two ways to get Cecil across. Write your solutions as numerical expressions.
a. Span of tightrope: 6 feet Given lengths: 1, 3, 4 feet
Expression:_3+4+CD=6
Expression:
Expression:_5+7+(-2) +62-8
:
)
b. Span of tightrope: 8 feet Given lengths: 2,5, 7 feet
Expression:

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5

c

step-by-step explanation:

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places