== CHECK Your Understanding
1. Danielle invested money in two different accounts. Her investments
can be modelled by the following growth functions, where x represents
the time in years:
A. Y
1500(1.05)*
B. y = 2000(1.035)*
a) What was the principal that Danielle invested in each account?
b) What was the annual interest rate for each investment? Explain.
c) Determine the value of each investment at the end of 5 years
.
5
d) How long, in years, did it take for each account to have at least
$3000?
1.

Consider the following geometry problems in 3-space enter t or f depending on whether the statement is true or false. (you must enter t or f -- true and false will not work.) f equation editorequation editor 1. a plane and a line either intersect or are parallel t equation editorequation editor 2. two planes parallel to a third plane are parallel f equation editorequation editor 3. two lines either intersect or are parallel f equation editorequation editor 4. two planes orthogonal to a third plane are parallel f equation editorequation editor 5. two planes orthogonal to a line are parallel f equation editorequation editor 6. two planes either intersect or are parallel f equation editorequation editor 7. two lines orthogonal to a third line are parallel t equation editorequation editor 8. two lines parallel to a third line are parallel t equation editorequation editor 9. two planes parallel to a line are parallel f equation editorequation editor 10. two lines parallel to a plane are parallel f equation editorequation editor 11. two lines orthogonal to a plane are parallel