NYS COMMON CORE MATHEMATICS CURRICUIUM Lesson 7 Homework 503 5. RibbOO A is \( \frac{1}{3} \mathrm{~m} \) long. It is \( \frac{2}{5} \mathrm{~m} \) shorter than Ribbon B. What's the total length of the two ribbons?

What function is the reflection of \( f(x)=|x+2| \) about the \( x \)-axis? \( g(x)=|x-2| \) Non of the other options \( g(x)=|-x+2| \) \( g(x)=-|x-2| \)

Enter the appropriate value to answer the question or 16. Graph the function \( f(x)=\sqrt{x+2}-5 \)

Use logarithms to solve the equation for \( t \). R \( e^{0.27}=8 \)

The half-life of radium is 1690 years. If 60 grams are present now, how much will be present in 430 years? \( \square \) grams (Do not round until the final answer. Then round to the nearest thousandth as needed.)

Julie swam, biked, and ran in a 22.2 mile triathlon. She completed the race in 2.15 hours. The function \( m=13.8 \mathrm{~h} \) represents the miles \( m \) Julie biked in \( h \) hours. Was her average speed biking less than or greater than her average speed for the entire race? Justify your answer. Round to the nearest tenth if necessary.